Behaviour of a Vortex Sheet Separating from a Smooth Surface

Abstract

The behaviour of a vortex sheet embedded in an irrotational steady flow and springing from a separation line on a smooth body is studied in the neighbourhood of the separation line. It is shown first that the vortex sheet is tangential to the wall along the separation line. then, under the assumptions that the body is slender and the separation line is highly swept, it is shown that the exponent which defines how rapidly the sheet departs from the body must take one of a set of discrete values. The smallest of these, corresponding to the most rapid departure of the sheet, implies an infinitely large adverse pressure gradient on the upstream side of the separation line. The next largest exponent avoids this. The implications for modelling separated flows are briefly discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1977
Accession Number
ADB023230

Entities

People

  • J. H. B. Smith

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Analytic Functions
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Hydrodynamics
  • Inviscid Flow
  • Leading Edge Flaps
  • Leading Edges
  • Pressure Gradients
  • Steady Flow
  • Stratified Fluids
  • Two Dimensional

Readers

  • Fluid Dynamics.
  • Operations Research